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WASHINGTON (WUSA9) -- Good news: the two Sumatran tiger cubs born at Smithsonian's National Zoo in August have passed their swim reliability test.

Zoo officials made the announcement on Wednesday after Bandar and Sukacita took doggy paddles in water at the zoo.

Officials say both were "able to keep their heads above water, navigate to the shallow end of the moat and climb onto dry land." Animal keepers Dell Guglielmo and Marie Magnuson guided the cubs in the right direction as the cubs swam through the shallow end of the moat, which is approximately 2.5 feet deep, according to officials. Officials say the side of the moat closest to the public viewing area is about 9 feet deep.